<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <h1>简单计算器</h1>
        <div>
            <span>数值A：</span>
            <span>
                <input type="text" v-model="a">
            </span>
        </div>
        <div>
            <span>数值B：</span>
            <span>
                <input type="text" v-model="b">
            </span>
        </div>
        <div>
            <button @click="sum">计算</button>
        </div>
        <div>
            <span>计算结果</span>
            <span>{{result}}</span>
        </div>
    </div>
    <script src="../vue.min.js"></script>
    <script>
        var app = new Vue({
            el: '#app',
            data: {
                a: '',
                b: '',
                result: ''
            },
            methods: {
                sum: function () {
                    this.result = parseInt(this.a) + parseInt(this.b);
                }
            },
        })
    </script>
</body>

</html>